Seating support



FIG. 1 is an isometric view of the seating support of present design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 3 is a right side elevation view thereof, the left side elevation view being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line is for illustrative purposes only and forms no part of the claimed invention. 

The ornamental design for a seating support, as shown and decribed. 